Hydraulic steadying device, especially for motor vehicles



W. ZENZ Jan. 3, 1939.

HYDRAULIC STEADYING DEVICE ESPECIALLY FOR MOTOR VEHICLES Filed June 15, 1937 I Patented Jan. 3, 19 9 I 2 142 296 UNITED STATES PATENT OFFICE HYDRAULIC STEADYING DEVICE, ESPE- CIALLY FOR. MOTOR VEHICLES Wilhelm Zenz, Coblenz-Neuendorf, Germany, as-

signor of one-half to Oscar Cupper, Coblenz, Germany Application June 15, 1937, Serial No. 148,349

In Germany October 29, 1936 9 Claims. (Cl. 26711) This invention relates to a hydraulic steadying l, 2 and 3, 4 designate in Fig. 1 the pairs of cyl- 7 device, especially for motor vehicles. inders arranged on the two sides of the vehicle It has become known, to connect by conduits, and connectedv respectively by conduits 5 and 6 generally intersecting the one the other, the douarranged crosswise. A compensating device HS 5 ble-acting hydraulic shock'absorbers arranged on arranged between the two conduits.

the two sides of the vehicle, and to arrange be- Th omp evi n sts, ccordin tween these conduits a compensating cylinder to Fig. 2, of a cylindrical housing formed by two with pistons. In these compensating devices the halves 8 and 9' adapted to be screwed the one piston is either carried by feeble springs serving on the other. The internal space of the housing 10 merely to maintain the piston in a medium posi- 8: 9 is sp ri a y enlar ed at the middle. and 10' tion when it is inoperative, or the springs carryat this point a piston ill in the form of a sphere ing the piston are so strong, that they exert a is located. Valves l3 and H are arranged in the certain influence upon the whole plant. Springs admission ports II and I2 and normally held possess, however, in this instance, the inconvenin the open position by springs l5 and Hi. If the 5 ience that their spring power alters in linear dihydrau i p ssur a t in the d ct n of t rection and that their production and dimensionarrow I'l flows throughthe admission port l2 ing causes certain difficulties in consideration of to e cy t Piston s ed o the the small dimensions of the steadying device. e nd assumes t s p indicated in 0t' This invention relates to a compensating deted lines. The piston then presses the valve I3 vice, the springing characteristic of which can exinto its closing position- 2 tend according to any desired curve and which In the embodiment of the invention shown in can be easily made even in the smallest dimen- Fig. 3 the piston consists of a disc 18 more or less sions. requires no adjusting, works accurately, rigid, the rim of which is covered with an elastic requires neither springs nor piston packings and bead 19. The housing of the compensating dewhich is much cheaper to produce, vice has the shape of a double cone 20, 2|, trun- According to the invention the piston of the (rated on both Sides, w t a mission ports 22, 23 compensating device consists of an elastic body for the liquid, said ports adapted to be shut off i which, in the inoperative position, is situated in y P 24, 25, fixed 0n the i The shutting,

'- a widening of the housing and is forced by hy- O es Place s $00!! s t e d sc as Carried draulic pressure towards the one or other side out atravel determined by the length of the pins. into a narrower portion of said housing. According to Fig. 4 cup-shaped inserts 28, 29

The piston may be constructed in different are located in the cylinders 26, 21. of the commanners, for instance as rotary body (sphere, pensating device, the desired deformation of the. ellipsoid) or as disc with elastic rim, the spring elastic piston 30 being determined by the shape. characteristic being determined thereby. To fur-' of these inserts- T e body s r how as a ther increase the elasticity of the piston it may hollow sphere which is filled with a suitable fluid, be constructed as a closed hollow body inflated or inflated. 1 by air. I claim:-

In order that, at very high pressures, the piston 1. In a. hydraulic stabilizer for vehicles; an 40 cannot be pressed into the connecting conduits axle forming part of the vehicle, a pair of pis- 40 or too strongly deformed, a shutting-off device is tons operatively connected to one end, and a pair provided in the compensating device upon which of pistons operatively connected to the other end the piston can act. Exchangeable cup-shaped inof the axle, a cylinder for each piston adapted to serts are preferably inserted into the cylinders in receive a liquid, pipes connecting one cylinder in order to determine the desired deformation of each pair at one end of the axle to the oppositely 45 the elastic piston by the form of said inserts. arranged cylinder at the other end of the axle, a. Three embodiments, of the invention are illushousing defining an extension, a body of elastic trated by way of example in the accompanying material secured in the extension, a pipe extenddrawing, in which in ing from one end of the housing to one of the con- Fig 1 the total plant is shown. nesting p p s a d a p p e t d m th Fig.2 shows the first, other end of the housing to the other connecting Fig. 3 the second and pipe.

Fig. 4 the third embodiment of the invention. 2. Ina hydraulic stabilizer for vehicles, anaxle Fig. 5 is a perspective viewof a pair of wheels forming part of the vehicle, a pair of pistons op- I and axles fitted with hydraulic steadying device. eratively connected to one end, and a pair of pistons operatively connected to the other end of the axle, a cylinder for each piston adapted to receive a liquid, pipes connecting one cylinder in each pair at one end of the axle to the oppositely arranged cylinder at the other end of the axle, a housing defining an extension, a body in the shape of a revolution body made of elastic material secured in the extension, a pipe extending from one end of the housing to one of the connecting pipes, and a pipe extending from the other end of the housing to the other connecting pipe.

3. In a hydraulic stabilizer for vehicles, an axle forming part of the vehicle, a pair of pistons operatively connected to one end, and a pair of pistons operatively connected to the other end of the axle, a cylinder for each piston adapted to receive a liquid, pipes connecting one cylinder in each pair at one end of the axle 'to the oppositely arranged cylinder at the other end of the axle, a housing defining an extension, a spherical body of elastic material secured in the extension, a pipe extending from one end of the housing to one of the connecting pipes, and a pipe extending from the other end of the housingto the other connecting pipe.

4. In a hydraulic stabilizer for vehicles, an axle forming part of the vehicle. a pair of pistons operatively connected to one end, and a pair of pistons operatively connected to the other end of the axle, a cylinder for each piston adapted to receive a. liquid, pipes connecting one cylinder in each pair at one end of the axle to the oppositely arranged cylinder at the other end of the axle, a housing defining an extension, a substantially spherical body of elastic material secured in the extension, a pipe extending from one end of the housing to one of the connecting pipes, and a pipe extending from the other end of the housing to the other connecting pipe.

5. In a hydraulic stabilizer for vehicles, an axle iorming part of the vehicle, a pair of pistons op- :ratively connected to one end, and a pair of pistons operatively connected to the other end of the axle, a cylinder for each piston adapted to receive a liquid, pipes connecting one cylinder in each pair at one end of the axle to the oppositely arranged cylinder at the other end of the axle, a housing defining an extension, an annular body of elastic material secured in the extensaion, a comparatively rigid disc inserted in the annular body, a pipe extending from one end of the housing to one of the connecting pipes, and a pipe extending from the other end of the housing to the other connecting pipe.

6. In 'a hydraulic stabilizer for vehicles, an axle forming part of the vehicle, a pair of pistons operatively connected to one end, and a pair of pistons operatively connected to the other end of the axle, a cylinder for each piston adapted to receive a liquid, pipes connecting one cylinder in each pair at one end of the axle to the oppositely arranged cylinder at the other end of the axle, a housing defining an extension, a hollow, fluidfilled body of elastic material secured in the extension, a pipe extending from one end of the housing to one of the connecting pipes, and a pipe extending from the other end of the housing to the other connecting pipe.

7. In a hydraulic stabilizer for vehicles, an axle forming part of the vehicle, a pair of pistons operatively connected to one end, and a pair of pistons operatively connected to the other end of the axle, a cylinder for each piston adapted to receive a liquid, pipes connecting one cylinder in each pair at one end of the axle to the oppositely arranged cylinder at the other end of the axle, a housing defining an extension, a body of elastic material secured in the extension, cupshaped membersv arranged at opposite sides 01 the extension for the reception of the elastic body, a pipe extending from one end of the housing to one of the connecting pipes, and a pipe extending from the other end of the housing to the other connecting pipe.

8. In a hydraulic stabilizer for vehicles, an axle forming part of the vehicle, a pair of pistons operatively connected to one end, and a pair of pistons operatively connected to the other end of the axle, a cylinder for each piston adapted to receive a liquid, pipes connecting one cylinder in each pair at one end of the axle to the oppositely arranged cylinder at the other end of the axle, a housing defining an extension, a body of elastic material secured in the extension, exchangeable cup-shaped members arranged at opposite sides of the extension for the reception of the elastic body, a pipe extending from one end of the housing to one of the connecting pipes, and a pipe extending from the other end of the housing to the otherconnecting pipe.

9. In a hydraulic stabilizer for vehicles, an axle forming part of the vehicle, a pair of pistons operatively connected to one end, and a. pair of pistons operatively connected to the other end of the axle, a cylinder for each piston adapted to receive a liquid, pipes connecting one cylinder in each pair at one end of the axle to the oppositely arranged cylinder at the'other end of the axle, a housing defining an extension, a body of elastic material secured in the extension, a pipe extending from one end of the housing to one of the connecting pipes, a pipe extending from the other end of the housing to'the'other connecting pipe, and check Valves arranged at the openings of the pipes in the housing and operatively connected to the body.

WILHELM ZENZ. 

